Dynamite-heater.



A. H. VANNAUKER.

DYNAMITE HEATER. APPLICATION FILED Nov.,1, 1907.

Patented Feb 2, 1909 GRM/weg rus NoRms FETE-Ns co., wAs'mNcroN. D, u.

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ALEXANDER HAELAND VANNAUKER, OF HAZLETON, PENNSYLVANIA.

nYNaMrrn-HEATER.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed. November 1, 1907. Serial No. 400,269.

To all whom it may concern:

Be it known that l, ALEXANDER HARLAND VANNAUKER, a citizen of the United States, residing at Hazleton, in the county of Luzerne and State of Pennsylvania, have invented a new and useful Dynamite-Heater, of which the following is a specification.

This invention relates to dynamitev heaters and has'for its object to provide a comparatively simple and inexpensive device of this character in which the heating chamber is maintained at a uniform tem erature thereby to prevent over-heating o the dynamite, or other explosive.v 1

A further object of the invention is to prov ide a heater in which the lamp or other heating medium is protected from drafts so as to revent the flame from being extinguished.

A further object is to provide improved means for locking the lamp within the heating chamber, and means for ventilating the latter.

A still further obj ect of the invention is generallyto improve this class of devices so as to increase their utility, durability and efliciency.

Further objects and advantages will appear in the folowing description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the ap ended claim.

n the accompanying drawings forming a part of this specification: Figure 1 is a side elevation of a dynamite heater constructed in accordance with my invention. Fig. 2 is a vertical sectional view of the same. Fig; 3 is a transverse sectional view taken on the line 3-3 of Fig. 2. Fig. 4 is a side elevation of the lamp detached.

Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The improved heater forming the subject matter of the present inventioncomprises a casing 5 preferably cylindrical in shape, as shown, and provided with a conical extension 6 terminating in a depending flange 7, the walls of the flange being extendedlaterally to form an annular reinforcing bead 8.

Disposed within the casing 5 above the combustion chamber 9 is a boiler 10 and arranged within the boiler is a substantially cylindrical receptacle 11 adapted to receive the dynamite to be heated.

lExtending of the boiler 10 is an annular iiange 12 preferablyL shaped in cross section and adapted to form a closure for the upper portion of the heating chamber 9, there being a similar Harige/18 extending laterally from the exterior walls of the receptacle 11 and constituting afclosure for the upper end ofthe boiler.

The flanges 12 and 13 are provided with oppositely disposed bayonet slots 14 which engage suitable locking pins or lugs 15 secured to the exterior walls of the casing and boiler, respectively, thereby to lockv the boiler andf dynamite receptacle within the casing.

iveted, bolted or otherwise rigidly secured to the exterior walls of the casing 5 at the conical portion 6 thereof are spaced depending legs 16 having their lower ends deiiected laterally at 17 and adapted to support the lower end of the casing in elevated position above the ground.

The legs 16 are reinforced and strength- VVened by the provision of an annulus or ring 18 which engages the legs 16 at the deflected portion 17 thereof so as to maintain said legs in spaced relation to each other and also in s aced relation to the depending flange 7 of t e cylindrical casing. i

Arranged within the heating chamber 9 is a conical shaped receptacle or reservoir 19 adapted to contain coal oil or other fuel, which latter is supplied to the wick 20 for heating the boiler 1G.

The adjacent walls of the reservoir 19 are extended to form a de ending flange 20 the marginal edge of whic is bent laterally to form an annular reinforcing bead 21 adapted to bear against the reinforcing bead 8 of the flange 7 thereby to limit the upward movement of the receptacle 19.

Extending inwardly from the interior walls of the flange 7 is an annular rib 22 provided on its upper face with a flat shoulder for engagement with spring locking members 24 carried by the reservoir 19.

The locking members 24 are preferably in the form of flat springs each having one end thereof riveted or otherwise secured to the exterior walls of the reservoir while the opposite or free ends of the springs are spaced laterally from the reservoir to form offset portions for engagement with the shoulder of the rib 22, the terminal portions of the springs being extended through openlaterally from the exterior walls ings 24 in the skirt ot' the reservoir and and containing receptacles cylindrical in thence extended downwardly beneath said shape, as shown, it is obvious that the saine reservoir to form finger pieces 25. may be rectangular in cross section or ol' any Wardly on the finger pieces 25 the offset from the spirit of the invention.

portions of the locking members will be Having thus described the invention what forced in cont-act with the exterior walls of is claimed is:

the reservoir so as to permit the latter to be A device of the class desciibed comprising casing. When the finger pieces are released the offset portions of the locking members edge of which is bent to produce a reinlineing will spring outwardly in engagement with bead, supporting legs secuied to the exterior the rib 22 and thereby lock the lamp against walls of the casing and spaced from the accidental displacement. flange, a lamp having inclined side walls The walls of the flange 7 are formed with a extended below the bottom of the same and plurality of perforations 26 which permit the provided with a lateially curved reinforcing passage of air to a chamber 27 formed bebead adapted to engage the bead on the tween the flange and reservoir and thence to flange of the casing, said flange being prothe combustion chamber 9. l vided with an annular rib extending inwardly 2o By having the perforations 26 formed in from the interior walls thereof and having an the flange 7 the flame is effectually protected l inclined face, and spring locking members from side drafts so as to prevent said llame l secured to the inclined walls of the lamp and vided with a perforated flange, the terminal from being accidentally extinguished., it having their intermediate portions oll` set for being here noted that the air entering engagement with the annular rib, the free through the apertures 26 will come in conends of the locking members being extended tact with the inclined walls of the reservoir through recesses iii the walls of the lamp and 19 and thence be deflected upwardly within thence bent downwardly to forni .terminal the heating chamber 9. depend'ng nger pieces.

By Ventilating the lower end of the heatln testimony that l claim the foregoing as in@ chamber in this manner the flame is kept my own, I have hereto aflixed my signature in constant contact with the exterior walls of in the presence of two witnesses. the boiler so as to maintain the water in said boiler at a uniform tenlperature and thus ALEXANDER HARLND VANNUlilllli. prevent over-heating of the dynamite er Witnesses: T1 other explosive within the receptacle 10. THOMAS EAD,

lVhile it is .preferred to make the casing l AUGUST Yoon.

It will thus be seen that by pressing inother angular formation without i'leparting readily positioned within the flange 7 of the )l a casing having a conical extension and procri 

